Mechanism for operating mine-doors



Patented Jan. 3:, I899. 7 A. N. HUMPHRE YS & E. memzw. MECHANISM FOKQPEBATING MINE DOORS.

(Applicatian filed Nov. 2, 1698.)

3 Sheats$haet I.

(No Model.)

mu, E S S M U W we Nonms PETERS 50., PHOYO-LITHUVWASHINGTON. n. c.

N0. BI3,678. Patented lan. 3|, I899. A. N. HUMPHREYS & E. MDGREW.

MECHANISM FOR OPERATING MINE DOORS.

(Application filed Nov..2, 1898.)

A 77'0RN m: Norms PETERS co. wow-urns WASHINGTON, n. c.

Patented Jan. 3|, I899.

A. N. HUMPHREYS & E MGGREW.

MECHANISM FOR OPERATING MINE DOORS.

(Appliation filed Nov. 2, 1898.)

3 Sheets-Sheet 3 m5 scams PETERS co. PNQYO-LITNO, WASHINGTON, u. c.

UNrrEn STATES PATENT Prion.

ALFRED NORMAN HUMPHREYS AND EDlVARD MGGREW', OF IRYVIN, PENNSYLVANIA.

MECHANISM FOR OPERATING MINE DO'ORS.

SPECIFICATION forming part of Letters Patent N 0. 618,678, dated January 31, 1899.

Application filed November 2, 1898.

'Mine-Doors, of which the following is a full,

clear, and exact description.

This invention relates to a mine-door of that class inwhich the door is connected with devices laid along the track or tramway passing into the mine, such devices being operated by the wheels, so that the door is automatically opened and closed.

This specification is the disclosure of one form of our invention, while the claims define the actual scope of the invention.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of part of the invention. Fig. 1 is a plan view of another part, forming a continuation of Fig. 1. Fig. 1 is a similar view of a third part, forming a continuation of Fig. 1. Fig. 2 is a side elevation of the part shown in Fig. 1. Fig. 2 is a side view of parts shown in Fig. l and forming a continuation of Fig. 2. Fig. 2 is a similar view of parts shown in Figs. 1 and forming a continuation of Fig. 2. Fig. 3 is a fragmentary plan view of a modified form of the invention. Fig. l is a transverse sectional view on theline 4: 4 of Fig. 2, and Fig. 5 is a transverse sectional view on the line 5 5 of Fig. 1.

Referring to all of the figures except Fig. 3, the form of the invention there shown is arranged with the track 6,passing into the mine, running between stanchions or door-posts 7. Two doors 8 are hung on the stanchions 7 by hinges 8 and are adapted to be closed at an angle or V, so as to open outward, as indicated by the dotted lines in Fig. 1. These doors maybe of any efiective construction and are arranged to close as nearly airtight as possible. The doors areconnected to move in unison by means of an arm 9, rig- $erial No. 695,319. (No model.)

idly attached to one of the doors and having its outer end pivoted to a link 10, pivotally attached to the other of the doors. The arm and link are located at the top of the doors, as indicated in Fig. 2, so as to be out of the way of the cars and drivers passing beneath.

The right-hand door 8 has an arm 11 rigidly attached thereto and pivotally connected with a link 12,1eading longitudinally with the track and joined to a crank-arm 14, fast on a rockshaft 15, mounted in bearings 16, attached to one of the cross-ties of the track and extending beneath the rails thereof. The end of the shaft 15 opposite the crank 14: has an arm 17 rigidly attached thereto, which arm carries a weight 18, by which to return the 'doors to closed position. Mounted along the right-hand rail of the track is awheel-bar 19, which extends from a point closely adjacent to the doors to a point distant therefrom within the mine. The forward end of the wheel-bar 19 is supported by a link 20, pivotally connected with the bar and with a sliding bar 21, mounted in bearings 22, attached to ties directly at the gates. Near its inner or rearward end the bar 19 is supported on a link 23, pivoted in a housing 24, secured in turn to one of the cross-ties, the arrangement being such that as the bar 19 is depressed by a car-wheel the link 23 swings to permit the bar to drop.

The inner end of the bar 19 is pivotally connected with a link 25, which in turn is con' nected with a bell-crank 26, fast to a transverse shaft 2'7, mounted in bearings 28, attached to one .of the cross-ties. An arm 29 is rigidly attached to the shaft 27 at one side of the track 6 and carries a weight 30, similar to the Weight 18, before described. The arm of the bell-crank lever 26 that is not connected with the link 25 is pivoted to a terminal wheel-bar 31, which curves downwardly at the rear end, so as to terminate in the plane of the rails, the terminal end of the bar 31 being supported by a link 32, pivoted in a housing 33, fast to one of the ties, all of which is similar to the parts 23 and 24, previously described. The front portion of the bar 19 is pivotally connected to an arm 31L, fast on the shaft 15. Therefore as the bar 19 is depressed, as shown by dotted lines in Fig. 2, the shaft 15 is rocked so as to throw upward the arm 17 and also to draw upon the link 12 and throw the doors 8 to open position, as shown bythe dotted lines in Figs. 1 and 2. Movement is transmitted from the bar 31 to the bar 19 by means of the bell-crank lever26 and link 25. These parts also serve to transmit movement from the bar 19 to the bar 31, so that the arm 29, with its weight 30, is brought into play each time that the bar 19 works.

Outside of the door a third or outer termi nal wheel-bar 35 is mounted and supported at its outer end on a link 36, pivoted in a housing 37, secured to one of the cross-ties, and at its inner end by means of an arm 38, to which arm the wheel-bar35 is pivoted. The arm 38 is fast on a transverse shaft 39, mounted in bearings 40, attached to one of the cross-ties. The shaft 39 has an arm 41 attached thereto, which carries a weight 42. The inner end of the bar 35 is pivotally joined to a link 36, that is pivotally connected with the outer end of the sliding bar 21. When the bar 19 drops under the direct or indirect pressure of the wheels bearing thereon, it draws the bar 21 leftward, as in Fig. 2, and causes the bar 35 to be moved downward also. Should the wheels bear upon the bar 31, the bars 19 and 35 are therefore caused to move down with the bar 31 and are returned to their upper or normal position by the several weights 4:2, 18, and 30. The described connections between the several wheel-bars result in the simultaneous movement of all these parts. The train approaching the doors from either side engages one of the terminal wheel-bars and causes the doors to be opened. Then when the train passes between the doors the doors are held open until the train rolls off the last terminal wheel-bar, and then the weights return the doors to closed position and the wheel-bars to their upper positions.

The modification shown in Fig. 3 consists simply in the use of a single large door 8 in place of the two smaller doors 8. This door is hung on a standard 7 and closed against a standard 7 The door 8 is operated in exactly the same manner and by identically the same means as those described in connection with the doors 8.

The sliding bar 21, which serves to connect the wheel-bars and which is mounted with its top edge in a plane parallel with and in immediate proximity to the tread of the rails, serves to permit the doors to swing flush with the upper faces or treads of the rails, thus effecting that approximately air-tight closure which is required by the mining laws. It may be seen that if the rails 19 and 35 were continued alongside of the doors they would necessitate placing the doors higher than they are shown in Fig. 2, and thus defeat the attainment of that essential condition mentioned.

The links 36 and 38 of the wheel-bar 35 incline toward the doors, and the link 32 and the upper arm of the bell-crank 36 also incline toward the doors, and consequently in a direction opposite to the inclination of the members 36 and 38. The purpose of this is to permit the terminal wheel-bars 35 and 31 to move with the direction in which the train is passingwhich is to say, to move downwardly with the direction in which the train is passing-thus causing the parts to operate easily and without undue strain.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. Ina mine-door, the combination with the door, of an intermediate wheel-bar and two terminal wheel-bars mounted to rise and fall alongside of one of the tramway-rails, connections between said bars by which they move simultaneously and in unison, swinging weights connected with the bars to return them to normal position, and means for transmitting the movement of the bars to the door.

2. The combination with a swinging door, of two wheel-bars mounted to rise and fall re spectively at the sides thereof, a sliding connection-bar located between the wheel-bars and below the plane of the door, links connecting the said connection bar with the wheel-bars, and means for transmitting the movement of the wheel-bars to the door.

3. The combination with a mine-door and a tramway running past the same, of two wheelbars located longitudinally of the rails and respectively at the front and rear sides of the door, means connecting the wheel-bars with the door, whereby to operate the door from the movement of the wheel-bars, and a sliding connection-bar located in close proximity to the tread of the rails and connected with the wheel-bars, whereby to permit the door to be hung with its lower edge flush with the tread of the rails.

4c. The combination with a mine-door, and a tramway running through the same, of a member mounted on each side of the doorand serving to be depressed by the wheels passing over the tramway, a connection between said members and the door, and a sliding connectingbar located in close proximity to the plane of the treads of the rails and having connection with the said members.

5. The combination with a mine-door, of an intermediate wheel-bar and two terminal bars, connections between said bars whereby to move the same in unison, a weight having connection with the bars to normally raise the same, and a connection between the bars and the door to operate the door.

6. The combination with a mine-door and a tramway running past the same, of two wheelbars extending longitudinally of the rails and located respectively at the sides of the door, and a connection between the rock-shaft and a sliding connection -bar coupling the two the door, to operate the door.

wheel-bars to transmit movement from one ALFRED NORMAN HUMPHREYS. to the other, means for supporting the bars EDWARD McGREW;

so that they will move vertically under the influence of the Wheels passing over the said bars, a rock-shaft actuated by the Wheel-bars,

WVitnesses:

- W. L. MARTIN,

LOUIS MALONE. 

